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Nitropolis 4 Review

Explore the future of gaming with Nitropolis 4, an electrifying slot masterpiece brought to you by ELK Studios. Unveiled on February 23, 2023, this game is set to revolutionize your casino experience. With an RTP of 94% and thrilling high volatility, brace yourself for an exhilarating ride through the reels.

Set against a backdrop of innovation, Nitropolis 4 boasts 6 reels that unlock a world of possibilities. From the low entry bet of 0.20 to the daring 100, every spin holds the potential to lead you to an astonishing max win of x50000.00.

ELK Studios takes the slot game to new heights with an extensive array of features that keep the excitement surging. From the magnetic Mega Symbol (3x3) to the captivating Avalanche / Cascading wins, this game offers Additional Free Spins, Bothway mechanics, Dynamic Reels, and a multitude of other features that promise non-stop entertainment. With Multipliers, Scatter symbols, and Symbol Swaps at your disposal, every moment at Nitropolis 4 is a revelation.

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Nitropolis 4 Features

Nitropolis 4 is packed with an impressive array of 22 unique features, including Additional Free Spins, Mega Symbols, Scatter symbols, and more, making every spin an adventure filled with endless excitement and surprises. With an abundance of 22 innovative features, Nitropolis 4 ensures that every spin delivers a fresh and thrilling gaming experience, setting it apart from the rest.

Additional Free Spins

In Nitropolis 4, the "Additional Free Spins" feature enhances the gameplay by offering players the chance to extend their free spin rounds. When triggered, a predefined number of additional free spins are awarded, extending the player's time in the free spin mode. This provides more opportunities to land winning combinations and potentially unlock other features within the game. "Additional Free Spins" can be a game-changer, as it prolongs the excitement and increases the potential for significant wins during the bonus rounds.

Avalanche / Cascading wins

When this feature is triggered, it changes the way symbols behave after a winning combination is formed.  When you land a winning combination of symbols on the reels, those symbols explode or disappear, creating space for new symbols to fall from above. As the winning symbols disappear, new symbols "cascade" or "avalanche" into the empty spaces from the top of the screen. This can potentially form new winning combinations.


The "Bothway" feature in the Nitropolis 4 slot introduces a unique twist to the standard payline structure, allowing winning combinations to be formed from left to right as well as from right to left across the reels. By enabling wins in both directions, the Bothway feature effectively doubles the number of potential winning combinations on each spin. This provides players with more opportunities to land winning combinations and boosts their chances of achieving payouts.

Dynamic Reels

This feature enhances the overall experience by altering the size and layout of certain reels, contributing to the game's dynamism.  During specific spins or as a result of certain in-game events, the Dynamic Reels feature can come into play. This means that one or more reels may change in size, becoming larger or smaller than the standard reels in the base game. When a reel expands, it accommodates more symbols than usual, which can lead to increased winning opportunities. With more symbols on the expanded reel, players have a better chance of landing winning combinations.

Mega Symbol (3x3)

This feature introduces colossal symbols that span a 3x3 grid on the reels, creating the opportunity for substantial wins.  The Mega Symbol (3x3) feature introduces a massive symbol that covers a 3x3 area on the grid. This sizable symbol can encompass multiple paylines and significantly increase the chances of forming winning combinations. 

Reelset Changing

This feature brings diversity to the game by changing the arrangement of symbols and potentially unlocking new winning opportunities.  As a result of the Reelset Changing feature, the layout of the symbols on the reels can change. This can introduce different patterns and combinations of symbols, leading to potential new ways to create winning lines. The change in the arrangement of symbols can also impact the active paylines, potentially creating new payline combinations or altering the ways winning combinations are formed.

Splitting Symbols

This feature involves symbols that can split into multiple instances, effectively multiplying their presence on the reels and increasing the chances of winning. Certain symbols in the game possess the ability to split into two or more individual instances when they land on the reels. The splitting of symbols effectively multiplies the presence of a particular symbol on the reels, leading to an increased chance of forming winning combinations. 

Remove Symbols

The "Remove Symbols" feature in the Nitropolis 4 slot introduces a unique gameplay mechanic that can help players clear specific symbols from the reels, potentially leading to new winning combinations. Once the Remove Symbols feature is activated, it focuses on eliminating certain designated symbols from the reels. These symbols are removed from the screen, creating vacant positions on the grid. After the targeted symbols are removed, the empty positions on the reels are filled with new symbols that fall from above, similar to the mechanics of Avalanche or Cascading Wins. This can potentially lead to new winning combinations being formed.

Reelset Changing

This feature enhances variety and excitement by altering the arrangement of symbols on the reels. When the Reelset Changing feature activates, the arrangement of symbols on the reels undergoes a transformation. This can involve changing the number of rows or columns on the reels, resulting in a different number of visible symbols on each spin. With the change in reelset configuration, the number of active paylines might also be adjusted. This can affect how winning combinations are formed and create new possibilities for payouts.

Symbol Swap

The "Symbol Swap" feature in the Nitropolis 4 slot introduces an innovative gameplay mechanic that can lead to the transformation of certain symbols on the reels. This feature adds an element of surprise and strategy, potentially creating new winning combinations and enhancing the overall gaming experience. When the Symbol Swap feature activates, the designated symbols are replaced with other symbols or a different type of symbol. This can be a random substitution or follow a predetermined pattern.

Nitropolis 4 Unique Features

Nitropolis 4 presents an array of captivating and innovative features that redefine the slot gaming experience. With a lineup of features ranging from Additional Free Spins, Bothway mechanics, and Dynamic Reels to Mega Symbols (3x3), Symbol Swap, and more, each spin becomes a journey of discovery and excitement.

The game's Additional Free Spins extend gameplay, while Avalanche / Cascading wins introduce dynamic symbol replacement, potentially leading to chain reactions of wins. The Bothway feature defies convention by allowing wins from left to right and vice versa. The Dynamic Reels feature alters reel sizes, enhancing unpredictability. Mega Symbols (3x3) dominate reels, boosting winning potential. Symbol Swap reshapes gameplay by transforming symbols, creating new avenues for victory.

Nitropolis 4 Winning symbols

The Dog symbol boasts a rewarding range of x1.5 to x3, while the Cat symbol offers payouts from x1 to x2. 

The Pug symbol's value falls between x0.75 to x1.5, and the Rat symbol ranges from x0.5 to x1.25. 

The intriguing Dirty Dawgs symbol and the enigmatic Gritty Kitty symbol both hold a payout range of x0.2 to x1. 

The Pug Thugs and Rogue Rats symbols offer slightly lower payouts, varying between x0.15 to x0.8 each.

Adding a dynamic twist, the naval mine stands as the game's wild symbol, capable of substituting for other pay symbols to create or enhance winning combinations.

The submarine assumes the role of the scatter symbol, a key element in triggering bonus rounds and unlocking the game's exciting features. 

Winning Symbols

Nitropolis 4 Sound & Gameplay

As the reels spin, the sound design resonates with the essence of an apocalypse, combining industrial undertones with suspenseful melodies. The echoing clinks and rumbles, along with futuristic electronic tones, encapsulate the dystopian ambiance, enhancing the game's immersion. Gameplay in Nitropolis 4 mirrors the chaos and unpredictability of an apocalypse. The innovative features, from dynamic reels to colossal symbols, are seamlessly integrated, delivering a gameplay rhythm that's as unpredictable as the world it portrays. The apocalypse-themed symbols, including Dog and Cat characters, Dirty Dawgs, and Gritty Kitty, harmoniously blend with the gritty backdrop, offering a visual experience that resonates with the theme.

Nitropolis 4 Mobile compatibility

Nitropolis 4 has been thoughtfully designed to cater to the preferences of all players, ensuring a seamless and engaging experience across a variety of platforms. Whether you're on the go with your mobile device or comfortably seated at your desktop, Nitropolis 4 adapts flawlessly to both environments. For mobile users, the game's interface has been optimized to fit various screen sizes, offering intuitive touch controls that make spinning the reels and accessing features effortless. Desktop players, on the other hand, can revel in the game's full-screen experience, immersing themselves in every detail of the intricate visuals and gameplay mechanics. The larger screen real estate also lends itself to appreciating the finer elements of the game's design and animations.

Nitropolis 4 Big wins

The Dog symbol offers a multiplier range of x1.5 to x3, while the Cat symbol provides a multiplier range of x1 to x2.

Considering the highest multiplier values and the maximum bet, which is 100, the calculations are as follows:

For the Dog symbol: Max Win = Max Bet (100) × Max Multiplier (x3) = 100 × 3 = 300.

For the Cat symbol: Max Win = Max Bet (100) × Max Multiplier (x2) = 100 × 2 = 200.

Nitropolis 4 Pros & Cons


  • Innovative and diverse set of features.
  • Bothway mechanic for bidirectional wins.
  • Exciting Mega Symbol (3x3) and Splitting Symbols features.
  • Wide betting range (0.20 - 100) for different player preferences.
  • Multiple bonus features including Free Spins and Level Up.
  • Adapted for both mobile and desktop play.
  • Unique dynamic reel mechanics.


  • High volatility might not suit players seeking frequent smaller wins.
  • RTP of 94% is relatively average.

Nitropolis 4 Alternatives

Nitropolis 2 

Nitropolis 3 



Nitropolis 4 emerges as a thrilling and immersive slot that redefines the gaming landscape. With its futuristic design, the game's unique features like Mega Symbols and Splitting Symbols keep players on the edge of their seats, promising captivating gameplay. While the high volatility might be daunting, the potential for massive wins adds an exhilarating dimension. The fusion of creativity and innovation, along with adaptability to various devices, ensures a dynamic experience. Nitropolis 4's post-apocalyptic world, coupled with its multitude of features, offers an enticing journey for those seeking both excitement and exploration in the realm of online slots.




Leo Harris

Last Updated: Oct 05, 2023

Leo Harris is a respected author and expert at With a passion for online slot games, Leo thoroughly tests and reviews the latest titles, providing valuable insights to players. His comprehensive evaluations cover gameplay, graphics, and overall entertainment value, helping readers make informed choices. Leo's captivating writing style and industry expertise have earned him a loyal following, making him a trusted voice in the online gambling community.

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The Mega Symbol (3x3) is a colossal icon that covers a 3x3 grid, increasing chances of big wins by potentially completing multiple paylines at once.

The Bothway feature allows wins to be formed from left to right and vice versa, doubling your chances of creating winning combinations.

The Symbol Swap feature transforms specific symbols, potentially leading to new winning combinations and strategic gameplay.

The Reelset Changing feature alters the arrangement of symbols on the reels, introducing new configurations and fresh gameplay dynamics.

Yes, Nitropolis 4 is optimized for mobile devices, providing a seamless and immersive gaming experience on the go.